AMBOISE, a town of France, dept. of Indre-et-Loire, on the left bank of the Loire, 12m. E. of Tours by the Orleans rail way. Pop. 3,948. Its famous chateau overlooks the Loire from the rocky plateau above the town. In the 11th century Amboise was a lordship under the counts of Anjou, who rebuilt the ancient castle. Its territory was united to the domain of the crown of France by Charles VII. about the middle of the 15th century, and thenceforth the chateau became a fa vourite residence of the French kings. The discovery in 1560 of the "conspiracy of Amboise," a plot of the Huguenots to re move Francis II. from the influence of the house of Guise, was avenged by the death of 1,200 members of that party. In 1563 Amboise gave its name to a royal edict allowing freedom of wor ship to the Huguenot nobility and gentry. The chateau was fre quently used as a state prison. In 1872 it was restored by the National Assembly to the house of Orleans. The Logis du Roi, the most important portion, was the work of Charles VIII.; the other wing was built under Louis XII. and Francis I. The ram parts are strengthened by two massive towers containing an inclined plane on which horses and carriages may ascend. The chapel of St. Hubert, said to contain the remains of Leonardo da Vinci, who was summoned to Amboise by Francis I., king of France, and died there in 1519, is late Gothic; a delicately carved relief over the doorway represents the conversion of St. Hubert. The town has a 15th-century gateway surmounted by a belfry. Iron-founding, wool-weaving and the manufacture of boots and shoes, sabots, and farm and fishing implements are among the industries.